Quite an amazing change Sega made to the 3d sonic series.
The sonic levels are fun to play. The werehog levels are moderately fun to play (if you like games like Ninja Gaiden, Devil May Cry, or other beat em' up games)
The game can be challenging at times to play, but please do not get me wrong the levels are not impossibly hard to play, but can possibly get frusrating due to some level take like 20 minutes to get past and then the boss kill you and you are forced to do the level over again.
The graphics are fantasic all the way around ranging from the cutscenes to the game play.
The controls are good and easy to get used to, and the game play is smooth and no the game does not play its self this time (if you put your controller down to let it finish the level you are mistaken)
The music is good and easy to get used to, and the voice acting is pretty good and if you are like me and you do not like the english voice acting you can switch it to the japanese voice acting with subtitles.
The story is pretty creative this time around because this time the world get blown apart.
Over all the game is worth buying if you are a sonic fan or if you just want to try it out. My only warning is that this game can get pretty difficult so if your not a very good gamer you might want to rent it.